Volume 41 Issue 6
Nov.  2024
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TIAN Ye, WANG Yixin, ZHAO Jun, et al.A full temperature range polymer retarder[J]. Drilling Fluid & Completion Fluid，2024, 41（6）：778-783 doi: 10.12358/j.issn.1001-5620.2024.06.011
Citation: TIAN Ye, WANG Yixin, ZHAO Jun, et al.A full temperature range polymer retarder[J]. Drilling Fluid & Completion Fluid，2024, 41（6）：778-783 doi: 10.12358/j.issn.1001-5620.2024.06.011
shu

A Full Temperature Range Polymer Retarder

doi: 10.12358/j.issn.1001-5620.2024.06.011
  • 1.

    Oilfield chemicals Division, COSL, Langfang, Hebei 065201

  • 2.

    XinJiang Oilfield chemicals Department, COSL, Luntai, Xinjiang 841600

  • Received Date: 2024-07-07
  • Rev Recd Date: 2024-08-13
  • Publish Date: 2024-11-30
    Abstract
  • A new quaternary polymer retarder C-R45L has been developed through molecular design to overcome the shortcomings of the conventional chain polymer retarders such as poor regularity, easy to cause overtime retardation at medium-low temperatures and slow development of strength etc. The raw materials for the synthesis of C-R45L include 2-acrylamido-2-methylpropanesulfonic acid (AMPS), itaconic acid (IA), sodium styrene sulfonate (SSS) and a long-chain hydrophobic associative monomer TAS-24. Study on C-R45L with IR spectroscopy and laboratory evaluation of C-R45L’s effects on the performance of cement slurries show that C-R45L has good retarding effect; a cement slurry treated with 4% C-R45L has thickening time of 347 min at 210 ℃. At high and medium-low temperatures, C-R45L has good retarding regularity. C-R45L can be used at high-temperature, medium-temperature and low-temperature operations. It has no adverse effect on the compressive strength of set cement, the medium/low temperature strengths and the top strength of set cement develop very fast. Good wide-temperature-range performance makes C-R45L suitable for use in cementing long open holes. C-R45L has been successfully used in cementing the exploration well Gutan-1, and excellent cementing job quality was obtained.

     

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